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Fix fd leak in KeepaliveTracker.

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The semantics of FileDescriptor in AIDL are that the callee must close
the file descriptor it receives manually.

Fix: 157789860
Bug: 155136951
Test: treehugger
Change-Id: Ice9fc9abe2959a84ad138a95c900dff676653665
Merged-In: Ice9fc9abe2959a84ad138a95c900dff676653665
(cherry picked from commit db8ae41da2)
This commit is contained in:
Lorenzo Colitti
2020-08-07 06:39:05 +00:00
committed by Junyu Lai
parent 62c3a4f46b
commit e5a64d49da
1 changed files with 25 additions and 7 deletions
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32
services/core/java/com/android/server/ConnectivityService.java
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@@ -220,6 +220,8 @@ import com.android.server.utils.PriorityDump;
import com.google.android.collect.Lists;
import libcore.io.IoUtils;
import org.xmlpull.v1.XmlPullParser;
import org.xmlpull.v1.XmlPullParserException;
@@ -7519,18 +7521,34 @@ public class ConnectivityService extends IConnectivityManager.Stub
public void startNattKeepaliveWithFd(Network network, FileDescriptor fd, int resourceId,
int intervalSeconds, ISocketKeepaliveCallback cb, String srcAddr,
String dstAddr) {
mKeepaliveTracker.startNattKeepalive(
getNetworkAgentInfoForNetwork(network), fd, resourceId,
intervalSeconds, cb,
srcAddr, dstAddr, NattSocketKeepalive.NATT_PORT);
try {
mKeepaliveTracker.startNattKeepalive(
getNetworkAgentInfoForNetwork(network), fd, resourceId,
intervalSeconds, cb,
srcAddr, dstAddr, NattSocketKeepalive.NATT_PORT);
} finally {
// FileDescriptors coming from AIDL calls must be manually closed to prevent leaks.
// startNattKeepalive calls Os.dup(fd) before returning, so we can close immediately.
if (fd != null && Binder.getCallingPid() != Process.myPid()) {
IoUtils.closeQuietly(fd);
}
}
}
@Override
public void startTcpKeepalive(Network network, FileDescriptor fd, int intervalSeconds,
ISocketKeepaliveCallback cb) {
enforceKeepalivePermission();
mKeepaliveTracker.startTcpKeepalive(
getNetworkAgentInfoForNetwork(network), fd, intervalSeconds, cb);
try {
enforceKeepalivePermission();
mKeepaliveTracker.startTcpKeepalive(
getNetworkAgentInfoForNetwork(network), fd, intervalSeconds, cb);
} finally {
// FileDescriptors coming from AIDL calls must be manually closed to prevent leaks.
// startTcpKeepalive calls Os.dup(fd) before returning, so we can close immediately.
if (fd != null && Binder.getCallingPid() != Process.myPid()) {
IoUtils.closeQuietly(fd);
}
}
}
@Override